Plow-clevis



(No Model.) 7

J. M. NORRIS.

I PLOW GLEVIS. No. 474,681. I Patented May 10, 1892.

\A/ITJESEEE I )VILWENTUFL I q g gw j UNITED STATES PATENT EEIoE.

JAMES MARTIN NORRIS, OF PIERCETON, INDIANA.

PLOW-CLEVIS.

SPECIFICATION forming part of Letters Patent No. 474,681, dated May 10,1892. Application filed November 30, 1891. Serial No. 413,578. (Nomodel.)

To CLZZ whom it may concern.-

Be it known that I, J AMES MARTIN NORRIS, of Pierceton, in the county ofKosciusko and Stateoflndiana,haveinventedcertainnewand usefulImprovements in Plow-Clevises; and I do herebydeclare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in plow-clevises; and it consistsin certain novel features of construction and in the arrangement andcombination of parts, which will be fully described hereinafter, andmore particularly referred to in the claims at the end of thisspecification.

The object of my invention is to construct an improved adjustableplow-clevis which may be vertically adjusted by the plowman withoutleaving his position at the rear of the plow and which is capable ofbeing operated while the plow is in motion. Adjustment of the clevis isoften required in order to make the plow run at any desired depth, whichmay vary, according to the nature of the land being plowed.

Inthe accompanying drawings, Figure 1 is a side elevation of a plowprovided with my improved clevis. Fig. 2 is a detached perspective viewof the clevis. Fig. 3 is a front view of the same.

A represents a plow-beam of ordinary ponstruction, and B anoutwardly-curved casting which is secured to the forward end of the beamin any preferred manner. This casting is provided with a series ofopenings or gageholes 0, extending its entire length. Projecting outwardfrom the upper end of the casting B are the V inturned arms D, for thepurpose presently to be stated.

E represents the clevis proper, which is pivoted by a bolt F to the beamA, as shown. The rear forked ends of the clevis are curved upward, andcut in their concave edges are the notches G. Anynumber of these notchesmay be formed that may be desired, and they are arranged directlyopposite each other in the adjacent clevis-arms.

H represents a tilting-lever, which, when in position, is between theclevis-arms, and

formed on opposite sides of this lever are the trunnions I, which engagethe notches G. The forward end of the lever H passes through an enlargedopening K in the upper end of the vertically-moving curved plate J,which is loosely connected at its lower end to the forward end of theclevis. This plate moves on the front curved face of the casting B, andis guided in its movement thereon by the arms D between which it passes.

Pivoted upon the outer side of the plate J is the latch L, which isformed with an inturned lower end M, which extends through an opening inthe lower end of the plate J, so as to engage the openings C in thecasting B. The upper end of the latch L is connected by therearwardly-extending rod or wire N to a lever O, pivoted near the rearend of the lever H. Thus it will be seen that by disengaging the latch Lfrom the casting B by means of the rod N and lever O the forward end ofthe clevis may be either lowered by raising on the rear end of the leverH or it may be raised by pushing downward on the said lever, theopenings 0, which are engaged by the projection M on the latch, servingto hold the clevis in the desired vertical adj ustment in relation tothe plow-beam. The outer end of the lever H is adapted to move forwardthrough the opening in the upper end of the plate J, so as to disengagethe trunnions I from one set of notches G and enable them to be placedin anotherset, as maybe desired. This adjustment is of advantage inseveral ways, one of which is to enable the operator to lower the saidlever out of the way of the driving-lines. It is also obvious that toenable the operator to elevate the forward end of the clevis to aconsiderable degree a hold on its rear end by the lever must be obtainedas near the extremity thereof as possible, and this is accomplished byplacing the trunnions I in the uppermost notches G. A shoulder P isformed on the lever H near its outer end, and confined on the said outerend between the said shoulder and. the plate J is a spiral spring whichserves to push the lever H backward, and thus hold the trunnions I inthe desired notches.

Having thus described my claim- 1. In a clevis, the combination, with abeam invention, I

and a clevis pivoted thereto, having its rear end upturned, of anoperating-lever secured between its ends to said upturned clevis end, aconnection between the forward ends of the lever and clevis, and a meansfor holding the clevis in the desired adjustment in relation to thebeam, substantially as shown and described.

2. In a clevis, the combination, with the beam and a clevis pivotedthereto, having its rear end upturned, of an operating-lever adjustablysecured to the said end, a plate which is secured at its lower end tothe forward end of the clevis and loosely connected to the said lever atits upper end, and a means for holding the clevis in the desiredadjustment in relation to the beam, substantially as shown anddescribed.

3. In a clevis, the combination, with the beam and a forked clevispivoted thereto, having its rear end upturned and provided with notches,of an operating-lever, trunnions on said lever which engage saidnotches, a connection between the forward end of the lever and theclevis, and a means for holding the clevis in the desired adjustment inrelation to the beam, substantially as shown and described.

4. In a clevis, agage attachment secured to the forward end thereof, aguide on said attachment, a clevis pivoted to the beam, having anupturned rear end, an operating-lever mounted in said end, a plate whichconnects the outer end of the clevis and the lever and which movesthrough said guide, anda means for securing the said plates to the gageattachment in the desired adjustment, substantially as shown anddescribed.

5. In a clevis, the combination, with the beam, gage attachment B, thepivoted clevis, and the lever mounted thereon, of a plate secured at itslower end to the forward end of the clevis and loosely connected to thelever at its upper end, a latch pivoted to the said plate, having aninturned lower end, and a rearwardly-extending operating-rod connectedto said latch, substantially as shown and described.

6. In a clevis, the combination, with the beam, a gage attachmentsecured to its forward end, a clevis pivoted to the beam, having itsrear end upturned, a lever adj ustably mounted in said end, a platesecured at its lower end to the clevis and constructed with an openingin its upper end through which the forward end of the said leverextends, and a spring on said lever which bears against the said plate,pushing the lever rearwardly, and

"thus holding it securely in its bearings, substantially as shown anddescribed.

In testimony whereof I affix my signature in presence of two witnesses.

' JAMES MARTIN NORRIS. Witnesses:

L. E. HARTER,

L. B. MGKINLEY.

